From 78608a0d940982e926401b4fa5e4a9061e9b53f3 Mon Sep 17 00:00:00 2001 From: Illia Smyrnov Date: Sun, 25 Aug 2013 23:29:30 -0700 Subject: Input: omap-keypad - enable wakeup capability for keypad. Enable/disable IRQ wake in suspend/resume handlers to make the keypad wakeup capable. Signed-off-by: Illia Smyrnov Signed-off-by: Dmitry Torokhov --- drivers/input/keyboard/omap4-keypad.c | 39 +++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) (limited to 'drivers/input') diff --git a/drivers/input/keyboard/omap4-keypad.c b/drivers/input/keyboard/omap4-keypad.c index 0244262..cd6b917 100644 --- a/drivers/input/keyboard/omap4-keypad.c +++ b/drivers/input/keyboard/omap4-keypad.c @@ -74,6 +74,7 @@ struct omap4_keypad { struct input_dev *input; void __iomem *base; + bool irq_wake_enabled; unsigned int irq; unsigned int rows; @@ -380,6 +381,7 @@ static int omap4_keypad_probe(struct platform_device *pdev) goto err_free_input; } + device_init_wakeup(&pdev->dev, true); pm_runtime_put_sync(&pdev->dev); error = input_register_device(keypad_data->input); @@ -393,6 +395,7 @@ static int omap4_keypad_probe(struct platform_device *pdev) err_pm_disable: pm_runtime_disable(&pdev->dev); + device_init_wakeup(&pdev->dev, false); free_irq(keypad_data->irq, keypad_data); err_free_keymap: kfree(keypad_data->keymap); @@ -418,6 +421,8 @@ static int omap4_keypad_remove(struct platform_device *pdev) pm_runtime_disable(&pdev->dev); + device_init_wakeup(&pdev->dev, false); + input_unregister_device(keypad_data->input); iounmap(keypad_data->base); @@ -439,12 +444,46 @@ static const struct of_device_id omap_keypad_dt_match[] = { MODULE_DEVICE_TABLE(of, omap_keypad_dt_match); #endif +#ifdef CONFIG_PM_SLEEP +static int omap4_keypad_suspend(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct omap4_keypad *keypad_data = platform_get_drvdata(pdev); + int error; + + if (device_may_wakeup(&pdev->dev)) { + error = enable_irq_wake(keypad_data->irq); + if (!error) + keypad_data->irq_wake_enabled = true; + } + + return 0; +} + +static int omap4_keypad_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct omap4_keypad *keypad_data = platform_get_drvdata(pdev); + + if (device_may_wakeup(&pdev->dev) && keypad_data->irq_wake_enabled) { + disable_irq_wake(keypad_data->irq); + keypad_data->irq_wake_enabled = false; + } + + return 0; +} +#endif + +static SIMPLE_DEV_PM_OPS(omap4_keypad_pm_ops, + omap4_keypad_suspend, omap4_keypad_resume); + static struct platform_driver omap4_keypad_driver = { .probe = omap4_keypad_probe, .remove = omap4_keypad_remove, .driver = { .name = "omap4-keypad", .owner = THIS_MODULE, + .pm = &omap4_keypad_pm_ops, .of_match_table = of_match_ptr(omap_keypad_dt_match), }, }; -- cgit v1.1